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Process simulations of post-combustion CO 2 capture for coal and natural gas-fired power plants using a polyethyleneimine/silica adsorbent

Zhang, Wenbin; Sun, Chenggong; Irons, Robin; Snape, Colin E.; Stebbing, Simon; Alderson, Tony; Fitzgerald, David; Liu, Hao

Process simulations of post-combustion CO 2 capture for coal and natural gas-fired power plants using a polyethyleneimine/silica adsorbent Thumbnail


Authors

Wenbin Zhang

Chenggong Sun

ROBIN IRONS Robin.Irons1@nottingham.ac.uk
Associate Professor in Chemical Engineering and Fuel Systems

COLIN SNAPE COLIN.SNAPE@NOTTINGHAM.AC.UK
Professor of Chemical Technology & Chemical Eng

Simon Stebbing

Tony Alderson

David Fitzgerald

HAO LIU LIU.HAO@NOTTINGHAM.AC.UK
Professor of Energy Engineering



Abstract

The regeneration heat for a polyethyleneimine (PEI)/silica adsorbent based carbon capture system is first assessed in order to evaluate its effect on the efficiency penalty of a coal or natural gas power plant. Process simulations are then carried out on the net plant efficiencies for a specific supercritical 550 MWe pulverized coal (PC) and a 555 MWe natural gas combined cycle (NGCC) power plant integrated with a conceptually designed capture system using fluidized beds and PEI/silica adsorbent. A benchmark system applying an advanced MEA absorption technology in a NETL report (2010) is used as a reference system. Using the conservatively estimated parameters, the net plant efficiency of the PC and NGCC power plant with the proposed capture system is found to be 1.5% and 0.6% point higher than the reference PC and NGCC systems, respectively. Sensitivity analysis has revealed that the moisture adsorption, working capacity and heat recovery strategies are the most influential parameters to the power plant efficiency. Under an optimal scenario with improvements in increasing the working capacity by 2% points and decreasing moisture adsorption by 1% point, the plant efficiencies with the proposed capture system are 2.7% (PC) and 1.9% (NGCC) points higher than the reference systems.

Citation

Zhang, W., Sun, C., Irons, R., Snape, C. E., Stebbing, S., Alderson, T., …Liu, H. (2017). Process simulations of post-combustion CO 2 capture for coal and natural gas-fired power plants using a polyethyleneimine/silica adsorbent. International Journal of Greenhouse Gas Control, 58, 276-289. https://doi.org/10.1016/j.ijggc.2016.12.003

Journal Article Type Article
Acceptance Date Dec 2, 2016
Online Publication Date Dec 15, 2016
Publication Date 2017-03
Deposit Date Jan 5, 2017
Publicly Available Date Mar 28, 2024
Journal International Journal of Greenhouse Gas Control
Print ISSN 1750-5836
Electronic ISSN 1750-5836
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 58
Pages 276-289
DOI https://doi.org/10.1016/j.ijggc.2016.12.003
Keywords Post-combustion carbon capture; Solid adsorbent; Process simulation; PEI/silica; Plant efficiency
Public URL https://nottingham-repository.worktribe.com/output/970513
Publisher URL http://www.sciencedirect.com/science/article/pii/S1750583616306077

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